Iris Pro Graphics P555 vs Radeon HD 6645G2
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Terascale 2 (2009−2015) | Generation 9.0 (2015−2016) |
| GPU code name | no data | Skylake GT3e |
| Market segment | Laptop | Desktop |
| Release date | 14 June 2011 (15 years ago) | 1 September 2015 (10 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 560 | 384 |
| Core clock speed | no data | 350 MHz |
| Boost clock speed | no data | 1000 MHz |
| Number of transistors | no data | 189 million |
| Manufacturing process technology | 40 nm | 14 nm+ |
| Power consumption (TDP) | no data | 15 Watt |
| Texture fill rate | no data | 48.00 |
| Floating-point processing power | no data | 0.768 TFLOPS |
| ROPs | no data | 6 |
| TMUs | no data | 48 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | medium sized | no data |
| Interface | no data | PCIe 3.0 x1 |
| Width | no data | IGP |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | no data | System Shared |
| Maximum RAM amount | no data | System Shared |
| Memory bus width | no data | System Shared |
| Memory clock speed | no data | System Shared |
| Shared memory | - | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | no data | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11 | 12 (12_1) |
| Shader Model | no data | 6.4 |
| OpenGL | no data | 4.6 |
| OpenCL | no data | 2.1 |
| Vulkan | - | 1.1.97 |
Pros & cons summary
| Recency | 14 June 2011 | 1 September 2015 |
| Chip lithography | 40 nm | 14 nm |
Iris Pro Graphics P555 has an age advantage of 4 years, and a 186% more advanced lithography process.
We couldn't decide between Radeon HD 6645G2 and Iris Pro Graphics P555. We've got no test results to judge.
Be aware that Radeon HD 6645G2 is a notebook graphics card while Iris Pro Graphics P555 is a desktop one.
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